mach/Makefile

   1 # Copyright (C) 1991-2013 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 subdir := mach
  19
  20 all:
  21
  22 # Some things below (but before including Rules) use configuration variables.
  23 include ../Makeconfig
  24
  25
  26 headers = mach_init.h mach.h mach_error.h mach-shortcuts.h mach/mach_traps.h \
  27           $(interface-headers) mach/mach.h mach/mig_support.h mach/error.h \
  28           $(lock-headers) machine-sp.h
  29 lock = spin-solid spin-lock mutex-init mutex-solid
  30 lock-headers = lock-intern.h machine-lock.h spin-lock.h
  31 routines = $(mach-syscalls) $(mach-shortcuts) \
  32            mach_init mig_strncpy msg \
  33            mig-alloc mig-dealloc mig-reply \
  34            msg-destroy msgserver \
  35            mach_error errstring error_compat errsystems \
  36            devstream setup-thread $(lock)
  37
  38 # The RPC interfaces go in a separate library.
  39 interface-library := libmachuser
  40
  41 # We produce mach_interface.h from mach.defs because there is already a
  42 # <mach/mach.h> that is not the interface header (thanks CMU).
  43 mach-interface-list := $(patsubst mach,mach_interface,$(mach-interface-list))
  44 mach/mach_interface.defs = mach/mach.defs
  45
  46 # Similarly for memory_object_user vs. memory_object
  47 mach-interface-list := $(patsubst memory_object,memory_object_user,\
  48                                   $(mach-interface-list))
  49 mach/memory_object_user.defs = mach/memory_object.defs
  50
  51 user-interfaces := $(addprefix mach/,$(mach-interface-list)     \
  52                                      mach_port mach_host exc    \
  53                     )\
  54                    $(addprefix device/,device device_request)
  55
  56 server-interfaces := mach/exc
  57
  58 # Clear any environment value.
  59 generated =
  60 \f
  61 # Translate GNU names for CPUs into the names used in Mach header files.
  62 mach-machine = $(patsubst powerpc,ppc,$(base-machine))
  63
  64 # Define mach-syscalls and sysno-*.
  65 ifndef inhibit_mach_syscalls
  66 -include $(objpfx)mach-syscalls.mk
  67 endif
  68 $(objpfx)mach-syscalls.mk: syscalls.awk Makefile
  69 # Go kludges!!!
  70         $(make-target-directory)
  71 # We must use $(CFLAGS) to get -O flags that affect #if's in header files.
  72         echo '#include <mach/syscall_sw.h>' | \
  73         $(CC) $(CFLAGS) $(CPPFLAGS) -E -MD -MP -MF $@-dep -MT $@ \
  74               -x c-header - \
  75               -D_MACH_`echo $(mach-machine) | tr a-z A-Z`_SYSCALL_SW_H_=1 | \
  76         sed -n -e 's/^kernel_trap(\(.*\),\([-0-9]*\),\([0-9]*\))$$/\1 \2 \3/p'\
  77         | $(AWK) -f $< > $@-new
  78 ifneq (,$(objpfx))
  79         sed $(sed-remove-objpfx) $@-dep >> $@-new
  80 else
  81         cat $@-dep >> $@-new
  82 endif
  83         rm -f $@-dep
  84         mv -f $@-new $@
  85 generated += mach-syscalls.mk
  86
  87 ifndef mach-syscalls
  88 # We cannot make the deps properly until we know how to make the system
  89 # call functions, and for that we must know what they all are.
  90 no_deps=t
  91 else
  92 $(mach-syscalls:%=$(objpfx)%.S): $(objpfx)%.S: $(objpfx)mach-syscalls.mk
  93         (echo '#include <sysdep.h>'; \
  94          echo 'kernel_trap (__$*,$(sysno-$*),$(nargs-$*))'; \
  95          echo 'weak_alias (__$*, $*)') > $@-new
  96          mv -f $@-new $@
  97 generated += $(mach-syscalls:=.S)
  98 endif   # mach-syscalls
  99
 100 # These syscalls that look like RPCs actually have no RPC equivalents.
 101 mach-shortcuts := $(filter-out device_writev_request \
 102                                device_read_overwrite_request \
 103                                device_read_overwrite \
 104                                vm_read_overwrite \
 105                                thread_switch \
 106                                ,\
 107                   $(patsubst syscall_%,%,$(filter syscall_%,$(mach-syscalls))))
 108
 109 ifndef mach-shortcuts
 110 # Forget about mach_interface.defs for this run.  On the next run,
 111 # $(mach-shortcuts) will be set, and that will change how
 112 # mach_interface.defs is processed: it will get the -D flags below.
 113 user-interfaces := $(filter-out $(mach-interface-list:%=mach/%) \
 114                                 mach/mach_port mach/mach_host mach/mach4 \
 115                                 device/device_request,\
 116                                 $(user-interfaces))
 117 endif
 118
 119 # For some reason, the calls in this file are `protected' by an ifdef.
 120 MIGFLAGS-mach/mach4=-DMACH_PCSAMPLE
 121
 122 # Make the MiG stubs for $(mach-shortcuts) be CALL_rpc.
 123 migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc)
 124 $(mach-interface-list:%=mach/%.uh) \
 125   mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk
 126
 127 ifdef mach-shortcuts
 128 $(mach-shortcuts:%=$(objpfx)%.c): $(objpfx)%.c: shortcut.awk \
 129                                                 $(objpfx)RPC_%_rpc.c
 130         $(AWK)  -v alias=$* -v call=__$* -v rpc=__$*_rpc \
 131                 -v syscall=__syscall_$* -f $^ > $@-new
 132         mv -f $@-new $@
 133 generated += $(mach-shortcuts:%=%.c)
 134 endif   # mach-shortcuts
 135
 136 # Generate mach-shortcuts.h, which will contain the prototypes for the
 137 # shortcutted kernel RPC functions.
 138 $(objpfx)mach-shortcuts.h: $(mach-interface-list:%=$(objpfx)mach/%.h) \
 139                            $(objpfx)mach/mach_host.h \
 140                            $(objpfx)mach/mach_port.h
 141 # The first line gets us one paragraph per line, with @s separating real lines.
 142 # The second line selects paragraphs for the shortcutted functions.
 143 # The third line removes `_rpc' from the names and reconstitutes the lines.
 144         cat $^ | tr \\012 @ | sed s/@@/@%/g | tr % \\012 \
 145         | grep '^/\* Routine [a-z0-9_]*_rpc \*/' \
 146         | sed 's/_rpc//g' | tr @ \\012 > $@-new
 147         mv -f $@-new $@
 148 generated += mach-shortcuts.h
 149
 150 before-compile += $(objpfx)mach-shortcuts.h
 151 \f
 152 include Machrules
 153 include ../Rules
 154
 155
 156 # A gcc bug prevents the generated file from working properly,
 157 # so we have one in the distribution for the time being.
 158 generated += errsystems.c
 159 $(objpfx)errsystems.c: errsystems.awk err_*.sub \
 160                        $(wildcard $(addsuffix /err_*.sub,$(+sysdep_dirs)))
 161         $(AWK) -v subsys='$(filter-out $<,$^)' -f $^ > $@.n
 162         mv -f $@.n $@
 163
 164
 165 # Convenient target to update all the generated source files.
 166 .PHONY: generated
 167 generated: $(addprefix $(common-objpfx),$(common-generated)) \
 168            $(addprefix $(objpfx),$(generated))
 169
 170 .PHONY: mach-before-compile
 171 mach-before-compile: $(mach-before-compile)